If they have, they will need to wait three months after such activity before donating blood. Those who say yes will be asked if they have engaged in higher-sisk sex. 30, potential donors will be asked if they have had new or multiple sexual partners in the last previous months, no matter their gender or sexual orientation. The blood service asked Health Canada to allow it to scrap questions about gender or sexuality, and instead base screening on higher-risk sexual behavior such as anal sex. Health Canada approved the request by Canadian Blood Services to end the policy that restricts homosexuals from donating blood for three months after engaging in gay sex. Trudeau said his government spent C$5 million dollars (US$3.9 million) on research into the safety aspects of changing the blood donation rules and multiple scientific reports showed 'our blood supply will continue to be safe.' Trudeau said at a news conference the ban should have ended 10 to 15 years ago, but research proving it would not affect the safety of the blood supply had not been done by previous governments. OTTAWA - Health Canada on Thursday lifted restrictions on gay men donating blood, a move Prime Minister Justin Trudeau said was 'good news for all Canadians' but had taken too long.